./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_4.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loops/while_infinite_loop_4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e1af5f99f69a9274241fcc833ef9ca578ac40199221caab0e395b3d77967510 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:58:42,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:58:42,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:58:42,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:58:42,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:58:42,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:58:42,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:58:42,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:58:42,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:58:42,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:58:42,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:58:42,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:58:42,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:58:42,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:58:42,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:58:42,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:58:42,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:58:42,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:58:42,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:58:42,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:58:42,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:58:42,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:58:42,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:58:42,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:58:42,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:58:42,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:58:42,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:58:42,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:58:42,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:58:42,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:58:42,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:58:42,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:58:42,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:58:42,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:58:42,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:58:42,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:58:42,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:58:42,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:58:42,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:58:42,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:58:42,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:58:42,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-02-21 03:58:42,134 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:58:42,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:58:42,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:58:42,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:58:42,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:58:42,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:58:42,137 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:58:42,137 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 03:58:42,138 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 03:58:42,138 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 03:58:42,139 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 03:58:42,139 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 03:58:42,139 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 03:58:42,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:58:42,139 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-21 03:58:42,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:58:42,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:58:42,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-21 03:58:42,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:58:42,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 03:58:42,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 03:58:42,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 03:58:42,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-21 03:58:42,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:58:42,142 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 03:58:42,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:58:42,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 03:58:42,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:58:42,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:58:42,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:58:42,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:58:42,145 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 03:58:42,145 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e1af5f99f69a9274241fcc833ef9ca578ac40199221caab0e395b3d77967510 [2022-02-21 03:58:42,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:58:42,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:58:42,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:58:42,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:58:42,389 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:58:42,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_4.c [2022-02-21 03:58:42,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35158cdb/5f19bad022234db2bb3e9362c35278ca/FLAGb594d6c67 [2022-02-21 03:58:42,828 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:58:42,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_4.c [2022-02-21 03:58:42,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35158cdb/5f19bad022234db2bb3e9362c35278ca/FLAGb594d6c67 [2022-02-21 03:58:42,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35158cdb/5f19bad022234db2bb3e9362c35278ca [2022-02-21 03:58:42,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:58:42,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:58:42,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:58:42,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:58:42,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:58:42,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:58:42" (1/1) ... [2022-02-21 03:58:42,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23338db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:42, skipping insertion in model container [2022-02-21 03:58:42,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:58:42" (1/1) ... [2022-02-21 03:58:42,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:58:42,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:58:43,082 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_4.c[333,346] [2022-02-21 03:58:43,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:58:43,110 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:58:43,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_4.c[333,346] [2022-02-21 03:58:43,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:58:43,132 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:58:43,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43 WrapperNode [2022-02-21 03:58:43,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:58:43,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:58:43,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:58:43,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:58:43,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,160 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 39 [2022-02-21 03:58:43,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:58:43,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:58:43,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:58:43,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:58:43,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:58:43,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:58:43,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:58:43,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:58:43,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (1/1) ... [2022-02-21 03:58:43,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:58:43,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:58:43,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:58:43,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-02-21 03:58:43,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-21 03:58:43,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:58:43,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:58:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-21 03:58:43,309 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:58:43,310 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:58:43,383 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:58:43,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:58:43,388 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-21 03:58:43,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:58:43 BoogieIcfgContainer [2022-02-21 03:58:43,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:58:43,390 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 03:58:43,390 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 03:58:43,392 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 03:58:43,393 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:58:43,393 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 03:58:42" (1/3) ... [2022-02-21 03:58:43,393 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a12fcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:58:43, skipping insertion in model container [2022-02-21 03:58:43,394 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:58:43,394 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:58:43" (2/3) ... [2022-02-21 03:58:43,394 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a12fcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:58:43, skipping insertion in model container [2022-02-21 03:58:43,394 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:58:43,394 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:58:43" (3/3) ... [2022-02-21 03:58:43,395 INFO L388 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_4.c [2022-02-21 03:58:43,425 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 03:58:43,425 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 03:58:43,425 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 03:58:43,425 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 03:58:43,425 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 03:58:43,425 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 03:58:43,426 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 03:58:43,426 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 03:58:43,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-02-21 03:58:43,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:58:43,463 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:58:43,467 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2022-02-21 03:58:43,467 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-02-21 03:58:43,467 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 03:58:43,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,474 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-02-21 03:58:43,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:58:43,474 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:58:43,474 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2022-02-21 03:58:43,475 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-02-21 03:58:43,482 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 13#L26-2true [2022-02-21 03:58:43,483 INFO L793 eck$LassoCheckResult]: Loop: 13#L26-2true assume !false;assume { :begin_inline_eval } true; 3#L16loopEntrytrue assume false; 14#L16-2true assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 12#L6true assume !(0 == __VERIFIER_assert_~cond#1); 6#L6-2true assume { :end_inline___VERIFIER_assert } true; 13#L26-2true [2022-02-21 03:58:43,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:58:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-02-21 03:58:43,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:58:43,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949889444] [2022-02-21 03:58:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:58:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:58:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:58:43,580 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:58:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:58:43,608 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:58:43,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:58:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash 39349172, now seen corresponding path program 1 times [2022-02-21 03:58:43,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:58:43,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313228264] [2022-02-21 03:58:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:58:43,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:58:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:58:43,715 INFO L290 TraceCheckUtils]: 0: Hoare triple {21#true} assume !false;assume { :begin_inline_eval } true; {21#true} is VALID [2022-02-21 03:58:43,716 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume false; {22#false} is VALID [2022-02-21 03:58:43,716 INFO L290 TraceCheckUtils]: 2: Hoare triple {22#false} assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {22#false} is VALID [2022-02-21 03:58:43,717 INFO L290 TraceCheckUtils]: 3: Hoare triple {22#false} assume !(0 == __VERIFIER_assert_~cond#1); {22#false} is VALID [2022-02-21 03:58:43,717 INFO L290 TraceCheckUtils]: 4: Hoare triple {22#false} assume { :end_inline___VERIFIER_assert } true; {22#false} is VALID [2022-02-21 03:58:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 03:58:43,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 03:58:43,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313228264] [2022-02-21 03:58:43,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313228264] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 03:58:43,720 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 03:58:43,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-21 03:58:43,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67181637] [2022-02-21 03:58:43,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 03:58:43,724 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 03:58:43,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 03:58:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-21 03:58:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-21 03:58:43,747 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:58:43,777 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-02-21 03:58:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-21 03:58:43,778 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,800 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:58:43,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 8 transitions. [2022-02-21 03:58:43,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-02-21 03:58:43,806 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 7 states and 7 transitions. [2022-02-21 03:58:43,807 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-02-21 03:58:43,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-02-21 03:58:43,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2022-02-21 03:58:43,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 03:58:43,808 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-02-21 03:58:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2022-02-21 03:58:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-02-21 03:58:43,843 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 03:58:43,844 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states and 7 transitions. Second operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,844 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states and 7 transitions. Second operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,845 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:58:43,846 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2022-02-21 03:58:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-02-21 03:58:43,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:58:43,847 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:58:43,847 INFO L74 IsIncluded]: Start isIncluded. First operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 7 states and 7 transitions. [2022-02-21 03:58:43,848 INFO L87 Difference]: Start difference. First operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 7 states and 7 transitions. [2022-02-21 03:58:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:58:43,848 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2022-02-21 03:58:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-02-21 03:58:43,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:58:43,849 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:58:43,849 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 03:58:43,852 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 03:58:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-02-21 03:58:43,854 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-02-21 03:58:43,854 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-02-21 03:58:43,854 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2022-02-21 03:58:43,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2022-02-21 03:58:43,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-02-21 03:58:43,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:58:43,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:58:43,856 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2022-02-21 03:58:43,856 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-02-21 03:58:43,858 INFO L791 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; 34#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 36#L26-2 [2022-02-21 03:58:43,858 INFO L793 eck$LassoCheckResult]: Loop: 36#L26-2 assume !false;assume { :begin_inline_eval } true; 31#L16loopEntry assume !false;~x~0 := 1; 32#L16-2 assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 37#L6 assume !(0 == __VERIFIER_assert_~cond#1); 35#L6-2 assume { :end_inline___VERIFIER_assert } true; 36#L26-2 [2022-02-21 03:58:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:58:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-02-21 03:58:43,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:58:43,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086785945] [2022-02-21 03:58:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:58:43,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:58:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:58:43,872 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:58:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:58:43,879 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:58:43,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:58:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash 39408754, now seen corresponding path program 1 times [2022-02-21 03:58:43,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:58:43,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759762776] [2022-02-21 03:58:43,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:58:43,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:58:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:58:43,949 INFO L290 TraceCheckUtils]: 0: Hoare triple {57#true} assume !false;assume { :begin_inline_eval } true; {57#true} is VALID [2022-02-21 03:58:43,950 INFO L290 TraceCheckUtils]: 1: Hoare triple {57#true} assume !false;~x~0 := 1; {59#(not (= ~x~0 0))} is VALID [2022-02-21 03:58:43,952 INFO L290 TraceCheckUtils]: 2: Hoare triple {59#(not (= ~x~0 0))} assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {60#(= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)} is VALID [2022-02-21 03:58:43,952 INFO L290 TraceCheckUtils]: 3: Hoare triple {60#(= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)} assume !(0 == __VERIFIER_assert_~cond#1); {58#false} is VALID [2022-02-21 03:58:43,952 INFO L290 TraceCheckUtils]: 4: Hoare triple {58#false} assume { :end_inline___VERIFIER_assert } true; {58#false} is VALID [2022-02-21 03:58:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 03:58:43,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 03:58:43,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759762776] [2022-02-21 03:58:43,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759762776] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 03:58:43,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 03:58:43,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-21 03:58:43,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553816833] [2022-02-21 03:58:43,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 03:58:43,955 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 03:58:43,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 03:58:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-21 03:58:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-21 03:58:43,957 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. cyclomatic complexity: 1 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:58:43,984 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2022-02-21 03:58:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-21 03:58:43,985 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:58:43,996 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:58:43,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 5 transitions. [2022-02-21 03:58:43,999 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-02-21 03:58:43,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2022-02-21 03:58:43,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-02-21 03:58:43,999 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-02-21 03:58:43,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-02-21 03:58:43,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 03:58:44,000 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-21 03:58:44,000 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-21 03:58:44,000 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-21 03:58:44,000 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2022-02-21 03:58:44,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-02-21 03:58:44,000 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-02-21 03:58:44,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-02-21 03:58:44,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 03:58:44 BoogieIcfgContainer [2022-02-21 03:58:44,006 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 03:58:44,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:58:44,008 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:58:44,008 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:58:44,009 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:58:43" (3/4) ... [2022-02-21 03:58:44,011 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-21 03:58:44,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:58:44,013 INFO L158 Benchmark]: Toolchain (without parser) took 1130.47ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 64.0MB in the beginning and 78.5MB in the end (delta: -14.6MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2022-02-21 03:58:44,014 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 51.3MB in the beginning and 51.3MB in the end (delta: 38.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:58:44,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.46ms. Allocated memory is still 96.5MB. Free memory was 63.8MB in the beginning and 73.1MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:58:44,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.56ms. Allocated memory is still 96.5MB. Free memory was 73.1MB in the beginning and 71.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:58:44,020 INFO L158 Benchmark]: Boogie Preprocessor took 20.24ms. Allocated memory is still 96.5MB. Free memory was 71.7MB in the beginning and 70.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:58:44,021 INFO L158 Benchmark]: RCFGBuilder took 206.40ms. Allocated memory is still 96.5MB. Free memory was 70.4MB in the beginning and 62.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:58:44,021 INFO L158 Benchmark]: BuchiAutomizer took 616.95ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 62.1MB in the beginning and 79.1MB in the end (delta: -17.1MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-02-21 03:58:44,022 INFO L158 Benchmark]: Witness Printer took 3.75ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 78.5MB in the end (delta: 588.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:58:44,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 51.3MB in the beginning and 51.3MB in the end (delta: 38.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.46ms. Allocated memory is still 96.5MB. Free memory was 63.8MB in the beginning and 73.1MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.56ms. Allocated memory is still 96.5MB. Free memory was 73.1MB in the beginning and 71.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.24ms. Allocated memory is still 96.5MB. Free memory was 71.7MB in the beginning and 70.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.40ms. Allocated memory is still 96.5MB. Free memory was 70.4MB in the beginning and 62.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 616.95ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 62.1MB in the beginning and 79.1MB in the end (delta: -17.1MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Witness Printer took 3.75ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 78.5MB in the end (delta: 588.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic). 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-02-21 03:58:44,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE